<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- 引入 vue.js 文件 -->
    <script src="../js/vue.js"></script>
</head>

<body>
    <div id="app">
        <!-- <input type="text" v-model="message"> -->

        <input type="text" :value="message" @input="valueChange">

        <h2>{{message}}</h2>
    </div>
    <script>
        new Vue({
            el: "#app",
            data: {
                message: "Hello Vue",
            },
            methods: {
                // event 事件对象
                valueChange(event) {
                    // console.log(event);
                    this.message = event.target.value;
                }
            }
        });
    </script>
</body>

</html>